What is the issue?Bolts and nuts, like most every fastening, have a tendency to seize up on boats due to the challenging sea going environment. Apply just a touch too much pressure and the heads can sheer off leaving a seized and often inaccessible bolt shaft.
Why address this?A sheered off bolt can halt a project, cause frustration and cost money.
How to address this?Drill and hammer in an 'easy out' to remove the sheered off bolt.
Easy outs are small hardened bits with tapered left-hand threads. The tops of each bit have a square head to support turning with a flat or adjustable wrench. Because the bits are tapered a single bit may be hammered and screw tightly into a range of holes.
The process of removing a sheered off bolt with a stub-remover is as follows:
1/ File or grind the remaining head of the bolt until it is flat.
2/ Locate and mark the bolt's center with a center-punch.
3/ Create a starter-hole with a small drill bit
4/ Follow this by drilling in the hole for the stub remover. This should be a size or two smaller than the diameter of the bolt shaft.
5/ Hammer the appropriate sized stub remover into the hole until it is securely wedged.
6/ Turn anti-clockwise with an adjustable wrench. The stub remover should dig in tight and un-turn the bolt.
With thanks to:Michael Harpur, Yacht Obsession.
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